Extrude Edges equivalent in Blender?
If I understood right from the video here's what you're looking for.

Just select the edges by pressing B key to box select (in wireframe mode).

With Ctrl+B bevel the edges and with the mouse wheel scrolling make 1 loop at center. 

Press Ctrl+- from the keyboard to deselect the edges so that only the center edge is selected.

With the edges selected press S to scale and press shift+Z (to unscale in the Z axis).